EP0254746A1 - Phare a projecteur pour vehicules - Google Patents

Phare a projecteur pour vehicules Download PDF

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Publication number
EP0254746A1
EP0254746A1 EP87900283A EP87900283A EP0254746A1 EP 0254746 A1 EP0254746 A1 EP 0254746A1 EP 87900283 A EP87900283 A EP 87900283A EP 87900283 A EP87900283 A EP 87900283A EP 0254746 A1 EP0254746 A1 EP 0254746A1
Authority
EP
European Patent Office
Prior art keywords
optical axis
face element
orientation
decided
image plane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87900283A
Other languages
German (de)
English (en)
Other versions
EP0254746B1 (fr
EP0254746A4 (fr
Inventor
Yutaka Nakata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ichikoh Industries Ltd
Original Assignee
Ichikoh Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP60292950A external-priority patent/JPH0789442B2/ja
Priority claimed from JP61025973A external-priority patent/JPH0789445B2/ja
Priority claimed from JP61025972A external-priority patent/JPH0789444B2/ja
Priority claimed from JP61025971A external-priority patent/JPH0789443B2/ja
Priority claimed from JP61031935A external-priority patent/JPH0789446B2/ja
Application filed by Ichikoh Industries Ltd filed Critical Ichikoh Industries Ltd
Publication of EP0254746A1 publication Critical patent/EP0254746A1/fr
Publication of EP0254746A4 publication Critical patent/EP0254746A4/fr
Application granted granted Critical
Publication of EP0254746B1 publication Critical patent/EP0254746B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors

Definitions

  • the present invention relates to a projector type headlamp for vehicles in which a predetermined beam formation reflected by an reflector through a shutter or shade and further projected by using a convex lens.
  • the luminosity distribution of the distribution pattern is generally decided by the formation (a revolutional ellipse surface, a revolutional parabolic surface) of the reflector's surface, so that there is no sufficient freedom in design for obtaining a desired luminosity distribution.
  • the object of the present invention is to present a novel headlamp of the projector type in which the above-mentioned drawbacks of the conventional headlamp of the projector type is eliminated.
  • the other object of the present invention is to present a headlamp in which the reflecting surface of the reflector is composed of a great many minute face elements connected with each other continuously and smoothly, the orientation of each face element is different from each other so as to obtain a desired luminosity distribution, and it is setable voluntary to a distribution pattern having a desired luminosity distribution.
  • Still the other object of the present invention is to present a projector type headlamp in which the orientation of each face element is decided such that the maximum luminosity region in the distribution pattern is substantially not affected with any influence by a shade for providing a light-dark boundary.
  • the reflecting surface of the reflector of the projector type headlamp of the present invention is not the surface decided by a geometrical surface such as a revolutional ellipse surface and a revolutional parabolic surface, but is composed of a great many minute face elements connected with each other continuously and smoothly, the orientation of each face element is previously decided such that the light incident from a light source is reflected toward the vicinity of the meridional image plane of the lens and a predetermined luminosity distribution can be obtained at the position of the shade. By this the distribution pattern having a desired luminosity distribution can be obtained voluntary.
  • the orientation of the face element with respect to an optical axis can be decided such that the light incident from the light source is reflected to the vicinity of the meridional image plane of the convex lens and the distance between the optical axis and the point at which the reflected light from each face element is reached on the meridional image plane, can be obtained as a function of a distance between each face element and the plane substantially perpendicular to the meridional image plane and including the optical axis.
  • the function suitably, it is possible to increase the luminous intensity of the central portion, and to increase the solid angle, and further to increase the meridional luminous intensity, thereby effectively utilizing the reflected light.
  • each face element it is also possible to decide the orientation of each face element to the optical axis such that the incident light from the light source is reflected toward the vicinity of the meridional image plane of the lens, and then the maximum luminosity region can be formed at the above portion of the shade's edge. Therefore, the reflected light can be utilized to the maximum extent, since the maximum luminosity region of the distribution pattern is not blocked substantially by the shade's edge for providing the light-dark boundary.
  • Fig. 9 is a view for explaining the_optical characteristic of each face element by using the function of Fig. 8
  • Fig. 10 is a schematic view for showing the distribution pattern
  • Fig. 11 is a schematic view showing the luminosity distribution of the distribution pattern
  • Fig. 14 is a schematic view showing distribution pattern in the position of a shade
  • Fig. 15 is a schematic view showing the distribution pattern in the position from a light source by 10 meter.
  • Fig. 10 is a schematic view for showing the distribution pattern
  • Fig. 11 is a schematic view showing the luminosity distribution of the distribution pattern
  • Fig. 12 is a view for explaining the optical characteristic of each face element in the case where the
  • FIG. 16 is a schematic side view showing a headlamp using a plate-like shade.
  • Figs. 17 to 19 are views showing a second embodiment of the projector type headlamp of the present invention, in which Fig. 17 is a view for explaining the optical characteristic of the reflector, Fig. 18 is a schematic front view showing the arrangement of each face element composing the reflector's surface and Fig. 19 is a schematic view showing luminosity distribution.
  • Figs. 20 and 21 are views showing a third embodiment of the projector type headlamp of the present invention, in which Fig. 20 is a view for explaining the optical characteristic of the reflector and Fig. 21 is a schematic front view showing the arrangement of each face element composing the reflecting surface of the reflector.
  • Figs. 20 is a view for explaining the optical characteristic of the reflector
  • Fig. 21 is a schematic front view showing the arrangement of each face element composing the reflecting surface of the reflector.
  • FIG. 22 and 23 are view showing a fourth embodiment of the projector type headlamp of the present invention, in which Fig. 22 is a view for explaining the optical characteristic of the reflector and Fig. 23 is a schematic front view showing the arrangement of each face element composing the reflecting surface of the reflector.
  • Figs. 24 and 25 are a fifth embodiment showing the projector type headlamp of the present invention, in which Fig. 24 is a schematic view for showing the distribution pattern on the shade shpwing the positional relationship between the maximum luminosity region and the shade's edge and Fig. 25 is a schematic view for showing the distribution pattern at the position apart from light source by 10 m.
  • Figs. 1 to 15 show a first embodiment of the present invention.
  • numeral 10 denotes a reflector formed in a concave mirror but not formed in a particular curved surface such as a revolutional parabolic surface and a revolutional ellipse surface.
  • the center axis of the reflector 10 is on Z axis as shown in Fig. 1, and the optical axis of a convex lens 14 is aligned with the center axis of the reflector 10.
  • Numeral 12 denotes a halogen bulb including a filament F as a light source, and the center of the filament F is arranged to be on the Z axis and in parallel with the X axis.
  • a shade 16 is disposed between the reflector 10 and the convex lens 14, and the edge 15 positioned at the topmost end thereof is disposed at the vicinity of a meridional image plane a-b of the convex lens 14.
  • the meridional image plane is a portion of an approximate sphere, and the curve indicated as a-b in Fig. 2 shows a cross-line between the horizontal plane ( X - Z plane) including the optical. axis and the approximate sphere.
  • the reflecting surface 10a of the above-mentioned reflector 10 is adapted to reflect the light beam coming from the light source F to the meridional plane a-b of the convex lens 14.
  • the shade 16 has an edge 18 slanted such that the edge is apart away from the meridional image plane a-b located on X-Z plane, and the edge 18 is arranged to pass through a portion of the light directed to the downward direction out of the light reflected on the reflecting surface 10a.
  • the light beam passing the shade 16 is condensed by the convex lens 14 as mentioned hereinafter and emitted forwardly.
  • the reflecting surface 10a of the reflector 10 is not a geometrically determined curved surface such as a revolutional ellipse surface and a revolutional parabolic surface, but composed of a plurality of minute face elements for reflecting the light beam coming from the light source to a predetermined portion or a predetermined point apart from the light source. It's detail will be explained specifically hereinafter.
  • Fig. 4 there is schematically shown a profile of the portion at which the reflecting surface 10a of the reflector 10 crosses the X-Z plane, where X, Y and Z axes denote horizontal, verticle and the center axes of the reflector 10 respectively.
  • the light source F is disposed on the Z axis apart from the center 0 of the reflector 10 with a predetermined distance, and the orientation N of a face element Q n is decided such that the light reflected on the face element Q n of the reflecting surface 10a is directed to the point S on the meridional image plane a-b of the convex lens 14 as three- dimensionally shown in Fig. 5.
  • the light reflected on the face element located on the center O of the reflecting surface 10a is directed to the point S 1 on the meridional image plane a-b through the light source F, and the light reflected on other face element Q m apart from the face element Q n is directed to the point S 2 on the meridional image plane.
  • the orientation of each of face elements Q n and Q m is decided.
  • Fig. 6 schematically shows the arrangement of the face elements in view of the Z axis
  • Fig. 7 shows the quarter portion in Fig. 6 in an enlarged scale.
  • a minute face element Q o is disposed at the position corresponding to the center O.
  • At the position corresponding to X 0, there are continuously disposed many face elements from Q o to Q 1 in the possitive direction of Y axis except the face element Q o , further to Q 2 in the negative direction.
  • each of face elements group as shown by these Q 1 -Q 0 -Q 2 is in actual and sequentially decided on the basis of the face element Q o , and the orientation of each face element is decided such that all of the light beams reflected on the face elements is concentrated to the point S 1 on the meridional image plane crossing the optical axis.
  • the light reflected on the face element group including the face elemtn Q m apart from the optical axis is adapted to be concentrated at the point S 2 on the meridional image plane having large distance from the optical axis than the point X s .
  • the relationship between the above-mentioned Xn and X s is decided by the fact how the desired luminosity distribution L along the meridional image plane a-b is set.
  • X s can be expressed as a function of X n as follows.
  • the function f(X n ) may be considered in several type such as a first order linear function, a second order linear function, a high order linear function or an exponential function, and further the function f(X n ) may be the conbination thereof.
  • the lights re - flected on the face elements located at the region -2 ⁇ X n ⁇ 2 are concentrated at the region -1 ⁇ X S ⁇ 1 on the meridional image plane, similarly the lights reflected by the regions 2 ⁇ X n ⁇ 4 and -4 ⁇ X ⁇ -2 are concentrated at the region 1 ⁇ X s ⁇ 2 and -2 ⁇ X s ⁇ -1 on the meridional image plane respectively.
  • Fig. 10 distribution pattern on a test screen provided at the vicinity of the meridional image plane is schematically shown as an equiillumination, and the luminosity distribution at that time is shown in Fig. 11. Where the lines H-H and V-V show the horizontal and vertical direction of the screen respectively.
  • a suitable function may be used for obtaining a desired distribution characteristic.
  • several luminosity distribution characteristics may be without any limitation due to the above examples within the mode that the maximum luminosity can be obtained at the central portion and the luminosity is symetrically reduced in the right and left directions as it is apart from the center.
  • the work for forming each face elements having a different orientation as mentioned above is effected by an NC working machine.
  • each face element of the reflector 10 formed so as to obtain the center luminosity suitable as mentioned above is projected by the convex lens 14 in the condition that a portion of the light is blocked by the shade 16 having the upper edge at the vicinity of the meridional image plane a-b.
  • the upper half of the pencil passes through the above portion of the upper edge portion 15 of the shade 16 and the most part of the lower half is blocked by the shade 16 as shown by the solid line, and the light beam located above the slanted end portion 18 is allowed to pass as shown dotted lines.
  • Numeral 100 denotes the maximum luminosity region.
  • the pencil projected forwardly by the convex lens 14 has a pattern inverted from the pattern as shown by the dotted lines in Fig. 14.
  • Fig. 15 there is shown the equiillumination curve of the distribution pattern, when the screen is disposed at the position apart from the light source F by 10 meter and a halogen bulb of H3 12 V/ 55 W in EC standard is used as the light source F.
  • the oblique line 20 denotes the light portion blocked by the shade 16 and the edge provided a light-dark boundary 19 to the pencil 17 formed by the convex lens 14.
  • each face element of the reflector is decoded such that all lights reflected on each face element are directed to the point on the meridional image plane a-b of the convex lens 14, but it may be possible to set the orientation of each face element such that each reflected light is directed to a point disposed between the meridional image plane and the sagittal image plane of the lens 14. Furthermore, it is also possible to form a shade as shown by the dotted line 16' in Fig.
  • the convex lens 14' having a curvature larger than the convex lens in the first embodiment may be used and the convex lens 14' may be disposed such that the plate 16' is contact with the meridional image plane a'-b'.
  • a disposition of face elements composing the reflector and the optical characteristic of the reflector in a second embodiment made of an optical system similar to the first embodiment.
  • the orientation of the face element Q n in the center reflection portion M is decided such that the light from the optical source F is reflected to the point S on the meridional image plane.
  • the orientation of face elements located on the same distance from the plane including the optical axis and in parallel with the meridional image plane substantially are concentrated at the same point on the meridional image plane a-b.
  • the light incident from the light source F to the marginal reflection portions C is reflected in the direction as shown by the arrows A and B to be concentrated at the point S 1 , and the luminosity distribution due to those light beams is shown by the dotted line 31 in Fig. 19. If a desired luminosity distribution L is as shown by the solid line in Fig. 19, the orientation of each face element in the central reflection portion M of the reflector should be decided such that the luminosity distribution is subtracted with the luminosity distribution due to the marginal reflection portions C from the luminosity distribution L.
  • the orientation of the face elements at the vicinity of the center portion is calculated such that the light emitted from the light source F to the vicinity of the center 0 of the reflector is reflected to the direction as shown by the arrows E and F (i.e. the direction in which the light is directed to the point comparatively shifted from the point S 1 at which the optical axis crosses to the meridional image plane a-b).
  • the orientation of each face element located at the vicinity of the center 0 of the central reflection portion M should be decided by using a modified function without using the above-mentioned linear function.
  • the luminosity distribution on the shade becomes in actual fact to the distribution that the luminosity distribution L is added with the luminosity distribution due to the revolutional ellipse surface 30 as shown by the dotted line 31, thereby, more increasing the luminosity at the central portion of the shade.
  • Figs. 20 and 21 there are shown the optical characteristic of the reflector and the disposition of each face element in a third embodiment of the present invention, composed of a similar optical system as the first embodiment as mentioned above.
  • the face element located in the central reflection portion M' of this embodiment forms approximately a portion of the revolutional ellipse surface having a first focus of the light source F and a second focus point of the point S 1 , as similar to the marginal reflection portion C in the second embodiment.
  • the central reflection portion of the reflector is approximately formed a portion of the revolutional ellipse surface 40, the reflected light is concentrated to the cross point S i between the optical axis and the meridional image plane a-b thereby increasing the central luminosity distribution with respect to the left and right direction, therefore there is provided a some degree of freedom with respect to the setting of the orientation N of each face element Q n in the marginal reflection portion C' of the reflector 10.
  • the desired luminosity distribution is obtained in the vicinity of the shade by the central reflection portion M' of the revolutional ellipse surface 40, therefore it is possible to freely control the orientation of each face element Q n in the marginal reflection portions C' thereby obtaining different luminosity distributions in the vicinity of the shade.
  • the light incident from the light source F is effectively reflected to the vicinity of the shade by the marginal reflection portions C', therefore the light is utilized effectively.
  • the reflecting surface 10a of the reflector is composed of a central reflection portion M", two intermediate reflecting portions B adjacent to the central reflection portion M", two marginal reflection portions C" adjacent to the intermediate reflecting portions B respectively.
  • the curved surface 50 is formed such that all of the lights incident from the light source F on the portions having the distance Di (0 ⁇ Di ⁇ D 3 ) from the Y-Z plane, are reflected to the direction parallel with the Y-Z plane and concentrated at the common point Si having a distance from the optical axis on the meridional image plane. Therefore, there is provided a distribution pattern that the light is distributed to the wider extent of the peripheral portion of the shade 16.
  • each face element in the marginal reflection portions C" is decided such that the light incident from the light source F is concentrated to the cross point 5 1 of the meridional image plane.
  • each face element in the intermediate reflecting portions B is decided in view of a contribution to the desired luminosity distribution due to the reflected lights in the central reflection portion M" and marginal reflection portions C".
  • the curved surface 50 is formed such that the central reflection portion M" is, in a horizontal section, a portion of a parabola having a focus of the light source F, and in a vertical section, a portion of an ellipse having a first focus of the light source F and a second focus of the point of marginal reflection portion.
  • the curved surface 50 is formed so as to at least have a parabola in the horizontal section, and it is not necessary to have a parabola in the vertical section.
  • the reflecting surface in the conventional case where the reflecting surface is formed by only a revolutional ellipse surface, is shown by the dotted line 41 in Fig. 22. The thickness of the reflector in the direction of the optical axis is reduced by the reflecting surface of this embodiment.
  • the light reflected at each face element of the reflector provides a distribution pattern having a light shade boundary 19 formed by the edges 15 and 18 of the shade 16, and a portion of the reflected light to be concentrated to the maximum luminosity region 100 is blocked by the shade 16 because the edge 15 of the shade 16 is located on the horizontal plane including the optical axis.
  • Fig. 24 shows a schematic distribution pattern on the position of the shade 16 as mentioned above.
  • the light source F is disposed on the axis of the reflector, the optical axis of the convex lens 14 is coincident with the axis of the reflector, and further the edge 15 of the shade 16 is disposed along the meridional image plane a-b.
  • a halogen bulf of H3 12V/55 W of EC standard is used for the light source F, and the halogen bulf has a filanent of 5.5mm in length and 0.8mm in diameter.
  • the distance betwen the center of the light source F to the center O of the reflector of the first embodiment is l5mm
  • the distance betwen the light source F to the cross point S 1 between the optical axis and the meridional image plane is 50mm
  • the distance h between the center of the maximum luminosity region 100 in the position of the shade 16 to the edge 15 of the shade 16 is about 2mm.
  • the orientation of each face element is decided such that the light incident from the light source F is directed to the point on the curve a"-b" of the meridional image plane located above the curve a-b of the meridional image plane by about 2mm.
  • the distribution pattern at the position apart from the light source F by 10mm is as shown in Fig. 25, and the proportion that the maximum luminosity region 100 is blocked by the shade 16 is reduced thereby effectively utilizing the light emitted from the light source F.
  • the above effects are recognized within the region of 0.5mm ⁇ h ⁇ 5mm, however no effect is obtained in the region of h ⁇ 0.5mm and h>5mm in actual fact.
  • the wording "vicinity of the meridional image plane of a convex lens” means the region including the meridional image plane per se and until the sagittal image plane of the convex lens substantially. Furthermore, a halogen bulf having a filament is used as a light source in the above embodiment, however a discharge lamp may be used.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Phare du type à projecteur dans lequel la surface réfléchissante d'un réflecteur n'est pas constituée par une surface courbe déterminée par la géométrie analytique mais se compose de minuscules éléments d'image contigus, chaque élément d'image réfléchissant les rayons de lumière incidents provenant de la source de lumière vers une zone à proximité du plan d'image méridional d'une lentille convexe, et la position par rapport à l'axe optique est déterminée de manière à obtenir une distribution désirée de la luminosité dans une position d'ombre. Il est ainsi possible d'obtenir aisément toute distribution désirée de la luminosité, de manière à utiliser efficacement les rayons lumineux émis par la source lumineuse.
EP87900283A 1985-12-27 1986-12-25 Phare a projecteur pour vehicules Expired - Lifetime EP0254746B1 (fr)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP60292950A JPH0789442B2 (ja) 1985-12-27 1985-12-27 プロジエクタ型の車輌用前照灯
JP292950/85 1985-12-27
JP61025973A JPH0789445B2 (ja) 1986-02-10 1986-02-10 プロジエクタ型の前照灯
JP61025972A JPH0789444B2 (ja) 1986-02-10 1986-02-10 プロジエクタ型の前照灯
JP61025971A JPH0789443B2 (ja) 1986-02-10 1986-02-10 プロジエクタ型の前照灯
JP25973/86 1986-02-10
JP25971/86 1986-02-10
JP25972/86 1986-02-10
JP61031935A JPH0789446B2 (ja) 1986-02-18 1986-02-18 プロジエクタ型の前照灯
JP31935/86 1986-02-18

Publications (3)

Publication Number Publication Date
EP0254746A1 true EP0254746A1 (fr) 1988-02-03
EP0254746A4 EP0254746A4 (fr) 1988-03-30
EP0254746B1 EP0254746B1 (fr) 1991-03-20

Family

ID=27520790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87900283A Expired - Lifetime EP0254746B1 (fr) 1985-12-27 1986-12-25 Phare a projecteur pour vehicules

Country Status (3)

Country Link
US (1) US4825343A (fr)
EP (1) EP0254746B1 (fr)
WO (1) WO1987004229A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334304A2 (fr) * 1988-03-22 1989-09-27 Ichikoh Industries Limited Projecteur pour véhicules
EP0341638A2 (fr) * 1988-05-09 1989-11-15 Ichikoh Industries Limited Projecteur pour automobiles
EP0346854A2 (fr) * 1988-06-14 1989-12-20 Ichikoh Industries Limited Projecteur pour véhicules
EP0371511A2 (fr) * 1988-11-30 1990-06-06 Ichikoh Industries Limited Phare pour véhicules automobiles
EP0390208A2 (fr) * 1989-03-31 1990-10-03 Ichikoh Industries Limited Phare du type projecteur pour automobiles
FR2704044A1 (fr) * 1993-04-15 1994-10-21 Valeo Vision Projecteur du genre elliptique pour véhicule automobile.
WO1999035438A1 (fr) * 1998-01-09 1999-07-15 Valeo Vision Projecteur du genre elliptique pour vehicule automobile
FR2789476A1 (fr) * 1999-02-09 2000-08-11 Valeo Vision Projecteur du genre elliptique pour vehicule automobile, susceptible d'emettre un faisceau sans coupure
FR2789475A1 (fr) * 1999-02-09 2000-08-11 Valeo Vision Projecteur du genre elliptique pour vehicule automobile, susceptible d'emettre un faisceau a coupure de photometrie amelioree
FR3065088A1 (fr) * 2017-04-11 2018-10-12 Valeo Vision Ensemble optique comprenant des reflecteurs munis de discontinuites

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ES2021107B3 (es) * 1987-03-11 1991-10-16 Eastman Kodak Company (A New Jersey Corporation) Faro de vehiculos y metodo de producir un sistema efectivo opticamente del mismo
JPH07118208B2 (ja) * 1988-06-28 1995-12-18 株式会社小糸製作所 自動車用前照灯
JP2696745B2 (ja) * 1994-05-31 1998-01-14 スタンレー電気株式会社 プロジェクタ型前照灯
US5483430A (en) * 1994-06-06 1996-01-09 Ford Motor Company Multi-faceted light reflector
DE19602978B4 (de) * 1996-01-27 2007-04-26 Automotive Lighting Reutlingen Gmbh Fahrzeug-Scheinwerfer
EP0843126A3 (fr) * 1996-11-14 2000-04-26 Stanley Electric Co., Ltd. Projecteur
FR2802282B1 (fr) * 1999-12-09 2002-01-25 Valeo Vision Procede d'elaboration d'un masque pour adapter un faisceau de projecteur de croisement a un sens de circulation inverse
US6540387B2 (en) 2000-04-25 2003-04-01 Ichikoh Industries, Ltd. Vehicular headlamp system
US6742918B2 (en) * 2002-04-12 2004-06-01 Guide Corporation Movable condenser lens
FR2843184B1 (fr) * 2002-08-05 2004-11-26 Valeo Vision Projecteur d'eclairage elliptique convenant a la realisation d'un faisceau de virage
TWM371086U (en) * 2009-06-03 2009-12-21 Depo Auto Parts Ind Co Ltd Illumination apparatus for vehicle
TW201425820A (zh) * 2012-12-24 2014-07-01 Hon Hai Prec Ind Co Ltd 光源及具有該光源的發光二極體車燈

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EP0153485A2 (fr) * 1984-02-25 1985-09-04 Hella KG Hueck & Co. Projecteur non-éblouissant pour véhicules

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JPS6258502A (ja) * 1985-08-10 1987-03-14 スタンレー電気株式会社 ヘツドランプ用複合反射鏡
DE3531224A1 (de) * 1985-08-31 1987-03-05 Bosch Gmbh Robert Scheinwerfer fuer abblendlicht oder nebellicht von kraftfahrzeugen

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EP0153485A2 (fr) * 1984-02-25 1985-09-04 Hella KG Hueck & Co. Projecteur non-éblouissant pour véhicules

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See also references of WO8704229A1 *

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334304A2 (fr) * 1988-03-22 1989-09-27 Ichikoh Industries Limited Projecteur pour véhicules
EP0334304A3 (en) * 1988-03-22 1990-05-23 Ichikoh Industries Limited Projector-type head lamp assembly for vehicles
EP0341638A2 (fr) * 1988-05-09 1989-11-15 Ichikoh Industries Limited Projecteur pour automobiles
EP0341638A3 (en) * 1988-05-09 1990-07-11 Ichikoh Industries Limited Automotive lamp assembly
EP0346854A2 (fr) * 1988-06-14 1989-12-20 Ichikoh Industries Limited Projecteur pour véhicules
EP0346854A3 (en) * 1988-06-14 1990-06-20 Ichikoh Industries Limited Projector-type head lamp for vehicles
EP0371511A2 (fr) * 1988-11-30 1990-06-06 Ichikoh Industries Limited Phare pour véhicules automobiles
EP0371511B1 (fr) * 1988-11-30 1995-06-07 Ichikoh Industries Limited Phare pour véhicules automobiles
EP0390208A2 (fr) * 1989-03-31 1990-10-03 Ichikoh Industries Limited Phare du type projecteur pour automobiles
EP0390208A3 (fr) * 1989-03-31 1991-10-23 Ichikoh Industries Limited Phare du type projecteur pour automobiles
EP0628765A1 (fr) * 1993-04-15 1994-12-14 Valeo Vision Projecteur du genre elliptique pour véhicule automobile
FR2704044A1 (fr) * 1993-04-15 1994-10-21 Valeo Vision Projecteur du genre elliptique pour véhicule automobile.
WO1999035438A1 (fr) * 1998-01-09 1999-07-15 Valeo Vision Projecteur du genre elliptique pour vehicule automobile
FR2773604A1 (fr) * 1998-01-09 1999-07-16 Valeo Vision Projecteur du genre elliptique pour vehicule automobile
US6431736B1 (en) 1998-01-09 2002-08-13 Valeo Vision Elliptical headlight for motor vehicle
FR2789476A1 (fr) * 1999-02-09 2000-08-11 Valeo Vision Projecteur du genre elliptique pour vehicule automobile, susceptible d'emettre un faisceau sans coupure
FR2789475A1 (fr) * 1999-02-09 2000-08-11 Valeo Vision Projecteur du genre elliptique pour vehicule automobile, susceptible d'emettre un faisceau a coupure de photometrie amelioree
US6863427B1 (en) 1999-02-09 2005-03-08 Valeo Vision Motor vehicle headlamp of the elliptical type capable of emitting a cut-off beam with improved photometry
US6866408B1 (en) 1999-02-09 2005-03-15 Valeo Vision Motor vehicle headlamp of the elliptical type capable of emitting a beam without cut-off
FR3065088A1 (fr) * 2017-04-11 2018-10-12 Valeo Vision Ensemble optique comprenant des reflecteurs munis de discontinuites
EP3388880A1 (fr) * 2017-04-11 2018-10-17 Valeo Vision Ensemble optique comprenant des réflecteurs munis de discontinuités
US10502384B2 (en) 2017-04-11 2019-12-10 Valeo Vision Optical assembly comprising reflectors provided with discontinuities

Also Published As

Publication number Publication date
EP0254746B1 (fr) 1991-03-20
EP0254746A4 (fr) 1988-03-30
WO1987004229A1 (fr) 1987-07-16
US4825343A (en) 1989-04-25

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